Door-operating mechanism



Dec. 25, 1928.

F. J. CLARK DOOR OPERATING MECHANISM Filed Oct. 27, 1925 5 Sheets-Sheet l [N VEN T 0R Frank CJ. Olaf/B A TTORNE YS Dec. 25, 1928.

F. J. CLARK DOOR OPERATING MECHANISM Filed oct. 27, v19.25

3 Sheets-Sheet 2 .lllltlllll wlw. l l I l l I l l l Il Dec. 2S, 192s.

F.J.CLARK DOOR QFERATING MECHANISM Filed Oct. 27, 1925 3 Sheets-Sheet Patented Der.. 25, 1928.

"UNITED f "rai: ES

rAisNraoFi-icn l FRANK `rj CLARK,v or BAr'rLE onniiii, MICHIGAN.

Doon-orERATING Mnoiiniiisivr.

Application filed october 27,1925. Serial No. 65,158.

This invention relates to improvenientsjin `door operating mechanisms. The mam objects of this invention are:v First, to provide an improved door operatino; mechanism for garage doors and other heavy doors which canl be effectively able in structure.

. Objects pertaining" to details and economies of construction'v and operatioirof my improvements will definitely appear from the detailed description to follow.. y

I accomplish .the objects of my invention by the devices and means describedin rthe following' specification. The invention is clearly defined and pointed out in the claim.

A structure embodying the features of my invention is clearly illustrated inthe ,accom'panying` drawing forming a part of this application, in which:v

Fig. I is a fragmentary side elevationlof a. structure embodying' my improved door operating' mechanism. I l

Fig'.4 II is a fragmentary plan view.

Fig'. III is an enlarged detail view partially iii section on a line corresponding' to line 3-3'of Figs. II and IV.

Fie'. IV is a detail section on a. line corresponding to line 4 4 of Fig. III.

Fig'. V is a ydetail section on a line coriA respondinga to line 5 5 of Fig. III.

Fin'. VI is a fragmentaryelevation of a modified` form of my invention showing an adaptation to a double sliding door.

Fig. VII is a fragmentary plan view of the embodiment shown in Fig. VI. Y Fig. VIII is a fragmentary elevation showingI an embodiment of my invention adapted to swinging doors.

Fig'. IX is a fragmentary plan view, the doors being shown in open position by dotted lines and in closed position by full lines.

In the drawingfthe sectional views are Vthe shaft 15.

taken looking in the direction of the little arrows at the ends of the. section lines and similar .numerals of reference indicate similar parts throughout the several views.

` Referring tother drawing, 1,1 represent parts of the door casing, 2 the door and 3 Vthe track Vfrom which the door is suspended by means of the hangers 4. The motor 5 and certain other parts are mounted upon a. base Vplate adapted to be secured to the door casing' or wall adjacent the'door to be operated is illustrated in the drawing.

The motor shaft 7` is provided with a lpinion 8. meshing witha gear 9 on the driving' shaft 10 which is disposed at the side ofthe motor, the shaft being supported by bearings 11 and l2 on the base plate. The

gear 9 'has a driving friction clutch member 13 on its face coacting' with the driven friction clutch member 14- on the traversing` or reversely threaded driven shaft 15.

The clutch member la is yieldingly supported by means of the coiled spring 16, theouter end of which engages the collar 17 on the shaft 15 and the inner end engaging the clutch member which is splined to 'The shaft 15 is supported at its outer end by the hanger 18.

The traversing member 19 has a pawl 20 coacting with the threads of thetraversing shaft. The traversing` member also has an arm 2l which is connected to the door 2 to be operated. It will be understood that the continiioiisrotation of the traversing shaft in one direction will open and close the door.

'Io control the motor I provide a running switch which stops the motor when the traversingmember 19 is at the ends of itstravel thereby stopping the door either in Vthe open or closed position.

of Contact with the member 25 at each end.

of the stroke so that it is necessary to close the circuit by means of the control or starting switch, in order to start the motor, this switch being held closed until the running switch becomes eii'ective In themodification showninLFigs. VI- and VII I show my improvements adapted-to a pair of sliding doorsBO, the driving' .shaft 32, corresponding to the driving shaft IO of the embodiment shown in Fig. `I,fbeing:` ex tended and provided with a reversely threaded door operating portion v33. .The operating mechanism for the doors is substantiallythe same as that described for the single door operating mechanism of Fig. I.

In the inodiiicationshown in Figs. VIII and -IX,"I :show my improvements as embodied in or adapted to swinging` doors 34 which are hinged at This mechanism is substantially that ofl the embodiment shown in'Figs. VI andVII except that the traversing members 36 are connected to the upwardly projecting` arms 37 on the doors by means of the links 38.`

`My improved door operatingl mechanism is-quite simple and economical in structure and is at the Sametime strong' Land durable.. Further, a motor of relatively small horsepower may be ei'ectively used. `Butcomparatively slight changes are required to adapt myimprovements,to sino-le or double sliding,- doors or swinging doors, thereby rcsulting in further economy.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is:

EIn a door operatingmechanism, the combination with a motor, of a driving shaft having -a 4vreversely threaded part, driving connections for said driving sha-ft to said motor including a gear on said driving shaft provided with a driving clutch member, a reversely threaded driven shaft disposed in alinement with said driving shaft and provided vwith `a yieldingly supported driven clutch member coacting with saiddriving clutch member, atraversing member on said driven shaft adapted to be connected to the door to be operated and provided with a pawl coacting with said driven shaft, a starting switch, a running switch comprising coacting relatively fixed and movable members,Y and actuating means for said. movable member including a traversingmember on said reversely `threaded portion oftsaid driving'- shaft, the stroke of said traversingl member beingl such as to 4openithe running switch at each end of its travel.

In witness whereof Ifhave hereunto set my hand.

FRANK J. CLARK. 

